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Phasing the X Chromosome

The X chromosome lives a genetic and genealogical life all of its own because of its unique inheritance properties which vary depending on whether you are a male and inherit the X only from your mother, or a female an inherit an X chromosome from both parents. Because of this, it’s a great, and often untapped, resource for genealogists.

I covered how this works in my blog titled X Marks the Spot. Jim Owston, however, has gone another step further and documented how to phase that X chromosome, meaning how to assign pieces of it to specific ancestors. This is a great educational piece and tool for us genealogists, so please, take a look:

5 thoughts on “Phasing the X Chromosome”

Roberta;
I read Jim’s analysis of the “X on the spot” and find it worthwhile. Without smirking, can you tell me how to identify X-chromosomes, if any are present, in my Family Finder DNA data?
Carlyle Hinshawgchinshaw@cableone.net

Roberta, I want to learn more about phasing across the genome using the data/results I have. Can you direct me to a good writeup on how to go about this? I know gedmatch is supposedly a resource for doing phasing, but the site seems to be down of late. 🙁
Thx!
Lisa